package com.itheima.user.dao;

import com.itheima.user.model.User;

public interface UserMapper {
    /**
     * 插入用户
     * @param user
     */
    void insert(User user);

    /**
     * 根据用户名查询用户
     * @param username
     * @return
     */
    User selectUserByUserName(String username);




}
